Nut-lock.



0. E. AN ERSQN. NUT LOCK.

APPLICATION FILED MAYB, 191B.

Patented Sept. 24, 1918.

WITNESSES ATTOR NEE CARL E. ANDERSON, OF DULUTH, MINNESOTA.

NUT-LOCK.

ever-ace.

To all Lei/2.0m it may concern Be it known that I, CARL E. ANDERSON, acitizen of the United States, residing at Duluth, in the county of SaintLouis and State of hlinnesota, have invented certain new and usefulImprovements in Nut-Locks, of which the following is a specification.

-This invention relates to nut locks, and more particularly to that typein which is employed a bolt with right and left threads, and two nutsengaged with the threads, and means for locking the nuts together.

The object'of the invention is toprovide simple and eihcent means forlocking a pair of nuts against separation on a bolt.

With the foregoing and other objects in view, which will appear as thedescription proceeds, the invention resides in the combination andarrangement of parts and in the details of: construction hereinafterdescribed. and claimed, it being understood that changes in the preciseembodiment of the invention herein disclosed may be made within thescope of What is claimed without departing from the spirit of theinvention.

In the accompanying drawings Figure 1 represents a side elcvatior of anut lock constructed in accordance with this i nventi on,

Fig. 2 is a longitudinal section thereof taken on the line 22 of Fig. 1.

Fig. 3 is a transvorsesection taken on. the line 3 3 ofFig. 2.

Fig. 4 is a similar View taken on the line 44. of Fig. 1.

Fig. 5 is a detail perspective View of the spring used in connectionwith the form of the device shown in Figs. 1 to 4.

Fig. 6 is an end view showing a slightly difl'erent form of theinvention.

Fig. 7 is a detail perspective view of the spring used in the "formshown in Fig. 6.

Fig. 8 is an end view showing another form of the invention, and

Fig. 9 is a detail perspective view of the spring used in the form shownin Fig. '8.

In the embodiment ill ustrateda bolt 1 is shown having a right handthread 2 and a reduced terminal 3 provided with a left hand thread. Forcooperation with these threaded portions of the bolt are two nuts 4.-and 5, one being the right hand one and the other the left. The rightnut t is pro vided with a reduced extension having notches 4" openingthrough the edge thereof, any desired number of which may beSpecification of Letters Patent.

Patented Sept. as, rare.

Application filed May 8, i918. Serial No. 233,336.

employed. The inner or opposed face of the nut 5 has an annulus 5provided with ratchet teeth 5".

A semicircular spring 6 is designed to encircle the notched andratcheted portions of the two nuts as is shown clearlyin Fig. 1 and hasa finger 7 extending inwardly at right angles thereto and designed toenter one of the notches 1. in the nut extension 4-. This finger I hasits outer face beveled to provide for the ratchet tooth or nut ridingthereover when secured into locking direction and which are designed toengage with the inner face of said tooth or finger to prevent turning inthe opposite direction. It will thus be seen that when the spring 6encircles the notched and ratcheted extensions of the two nuts thefinger 7 entering the notch 4t", the two nuts Will be locked againstseparation as one nut must be turned in one direction and the other inthe opposite direction to affect their removal.

To remove the nuts, the spring 6 is first disengaged by inserting asuitable implement under the free end thereof and then the outer nut maybe turned 0E and the inner nut also removed.

In Figs. 6 and 7, a slightly diiterent form of locking element is shown,comprising a segment 8 having a finger or tooth 9 extend ing at rightangles thereto and inward so as to enter one of the notches a" of thenut 4t when in operative position and which is held in such position bya coiled spring 10. The same locking element is shown in Fig. (3 and isheld in operative position by a rubber ring 10.

Still another form of locking element is shown at 11 in Figs. 8 and 9and comprises a spring having laterally spaced fingers 12 at one endwhich are designed to enter grooves in the peripheries of the extensionsof thenuts t and 5 to lock them against separation.

From the above description it will. be ohvious that the locking elementnecessary to hold the two nuts engaged must have the finger shown at 7in Figs. 1 to 4-, and at 9 in the other figures, and it may be carriedeither by a scmi-circular spring as shown in the first figures mentionedor by other yieldable means such as those shown in the remainingfigures.

The foregoing description and the drawings have reference to what may beconsid ered the preferred or approved form of my invention. his to beunderstood that I may make sue-h changes in construction and arrangementand combination of parts, materials, dimensions ct (5L, as may proveexpedient and fall within the scope of the claimed invention.

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patent, is:

1. A nut lock comprising a bolt having right and left threads, right andleft nuts for engagement with said threads, the op posed faces of thetwo nuts beii'lg one provided with a reduced peripherally notchedextension and the other with ratchet teeth, and semi-circular memberencircling the toothed and notched portions of said nuts, and providedwith an inturned finger for insertion in one of said notches.

emme 2'. A nut 100k comprising a bolt having right and leftthrcnds,right and left nuts for engagen'ient with said threads, the opposedfaces of the two nuts being one provided with a reduced notchedextension and the other with ratchet teeth, a curved member for lappingthe joint between and engaging the peripheries of the notched andratcheted men'lhers of the nuts having an inturned finger for enteringone of the notches, and resilient means for holding said finger carryingmember in operative position.

In testimony whereof I atlix my signature in presence of two Witnesses,

CARL E. ANDERSOJ.

Witnesses W. D. UNDERHILL, M. C. NnLsoN.

